Composite closure cap

ABSTRACT

The invention concerns a cap ( 1 ) comprising as assembly consisting of: a) a plastic insert ( 2 ) comprising a head ( 3 ) with closure means ( 31, 32 ) and a threaded skirt ( 4 ), and b) a metal wall. The invention is characterised in that: 1) said metal wall ( 5 ) covers all or part of the outer surface of said insert ( 2 ) and includes at least a metal skirt ( 51 ) for receiving said skirt ( 4 ) of said insert ( 2 ); said metal skirt ( 51 ) includes an edge ( 510 ) crimped to said insert ( 2 ) so as to assemble together said metal wall ( 5 ) and said insert ( 2 ); 3) said cap comprises means designed to provide weight and/or volume to the part of said cap located above said sealing closure means ( 31, 32 ).

SCOPE OF THE INVENTION

[0001] This invention relates to the field of screw caps, typically forthe closure of containers, bottles or flasks designed to be used forspirits, such as cognac, whisky, bourbon, etc . . . and typically forthe closure of glassware containers with necks having a diameter greaterthan the standard diameter, usually 30.5 mm.

TECHNICAL STATUS

[0002] Composite screw caps are already well known. Thus the Frenchapplication No 9706009 in the name of the applicant describes a metalscrew cap with a threaded plastic insert, the insert being held withinthe metal cap using an adhesive layer inside the metal cap, said layercomprising said plastic in a divided state.

[0003] Furthermore the screw caps typically used in the specific area ofthe invention are normally threaded caps made from moulded bakelite.

[0004] The American patent U.S. Pat. No. 3,215,297 also describes ascrew cap utilising a threaded plastic insert fitted inside a metallicenvelope, the lower extremity of this envelope being rolled in order toenter the plastic insert and thus be protected from corrosion.

[0005] Furthermore, in other areas not related to this invention, theFrench invention FR 1362 085 is well known which describes a cap forperfume bottles. This stopper comprises a threaded plastic cap whichprovides a support for a metal disc and a cap, the whole unit beingassembled using a crimped metal ring.

[0006] In this same field of cosmetics, there is the known internationalapplication WO99/06294, which describes a stopper for cosmetic products,in plastics material, where the skirt is covered with a crimped metalsheath.

[0007] Finally, in the field of infant baby foods, there is the knowninternational application WO98/52833 which describes the PT(Press-on/Twist-off) caps which comprise an annular preformed mouldedannular seal fitted to the metal cap by rolling of the lower edge of themetal cap.

DIFFICULTIES ENCOUNTERED

[0008] Caps using current bakelite techniques are known to adhere to theglass threads, which can make opening very difficult.

[0009] Moreover, these bakelite caps project a very traditional image,such an image being sought in certain areas, but which more often thannot is not desirable, since tastes change with time even for well knowntraditional brands.

[0010] Thus it is important to provide a manufacturer of spirits andalcohol a means of renewing the packaging of the bottled alcohol,spirits and liqueurs, principally by way of a new cap that fulfils thetechnical function of the existing caps, but also offers thepossibilities of modernising the product in aspects other thantechnical, and where all too often such aspects dominate as thetechnical differences between products become blurred.

[0011] Finally, it is important that these caps rely on a small numberof distinct parts from which they are assembled and/or rely on a smallnumber of manufacturing phases.

DESCRIPTION OF THE INVENTION

[0012] The composite screw cap in accordance with the inventioncomprises an assembly of a) a plastic insert comprising a head fittedwith a leakproof stopper sealing arrangement and a threaded skirt, andb) a metallic envelope in which :

[0013] 1) the said metallic envelope covers all or part of the exteriorsurface of the head of the said insert and comprises at least a metallicskirt that covers the said skirt of the said insert,

[0014] 2) the said metallic skirt comprises an edge that is crimped tothe said insert, typically at the lower edge of the skirt of the saidinsert, in order to ensure the correct assembly of the said metallicenvelope and the said insert,

[0015] and is characterised by the said cap comprising a way ofproviding weight and/or volume to the part of the said capsule situatedabove the said arrangement used to provide the leakproof stopper.

[0016] This cap resolves the problems posed. In particular, theinvention makes it possible to transform a screw cap into atop-of-the-range stopper, notably because of its looks and volume,and/or by the feel when the cap is handled, due typically to the weight,as will become apparent in the figures of the invention which serve toillustrate several embodiments of the invention, notably in the areaswhere weight and volume above the sealed screw cap have been added.Moreover this screw cap remains economical to manufacture.

DESCRIPTION OF THE FIGURES

[0017] All the figures relate to the invention.

[0018]FIGS. 1, 2, 3, 4, 5, 5 a, 6, 6 a, 7, 8, 9, 10, 11 and 12 are crosssections along the vertical axis 10 of the cap 1.

[0019] In FIGS. 1, 2, 6, 7, 9 and 12, the cross sections are in respectof screw caps fitted to a threaded bottle neck 7, the cap 1 isrepresented in section, whereas the neck is represented in cross sectionon the right part of the figure and in perspective on the left part ofthe figure.

[0020] In FIG. 1, the way that volume is provided is by using a void 30which forms a significant added height above the detachable seal 31.

[0021]FIG. 2 is similar to FIG. 1, and also comprises a supplementaryobject 6 inserted into the void 30, typically in order to weight thesaid cap.

[0022] FIGS. 3 to 3 a refer to another type of plastic insert 2 in whichthe said void 30 has radial partitions 300, in order to maintain thedetachable seal (not shown) in a strictly fixed position.

[0023]FIG. 3a is a view from below and FIG. 3b is a perspective sideview from below.

[0024] In FIG. 3a, 6 voids 40 have been shown and these are designed toensure the metallic envelope 5 and insert 2 are locked together duringrotation, as shown in FIGS. 4 and 4a.

[0025]FIGS. 4 and 5 represent capsules analogous to those shown in FIGS.1 and 2 respectively, but they differ in that the leakproof sealingarrangement is provided by a circular sealing lip 32.

[0026]FIG. 4a is a magnified view of the left inner end of the caprepresented in FIG. 4, illustrating a cut-out 40 in the lower edge 41 ofthe insert 2 in which is crimped the end 5100 of the skirt 51 in orderto lock together during rotation the metallic envelope 5 and the insert2.

[0027]FIG. 5a shows the metallic envelope 5 prior to assembly. Shown atthe lower end of the skirt 51 is the crimping edge 510, shown asstraight lines of the metallic envelope prior to assembly, and as dottedlines once crimped to the insert, and thus folded inwards, the crimpingedge 5100 also shown as dotted lines, representing the part of the edgethat has been crimped into the cut-out 40 of the insert.

[0028] FIGS. 6 to 7 represent the case where the head 50 of the metallicenvelope 5 provides an orifice 500, as shown in FIG. 6a, and asupplementary object 6, 6′, which passes through this orifice, in orderto increase the volume of the part of the cap located above thedetachable seal 31 which provides the leak proof sealing arrangement.

[0029] In FIG. 6 the cap includes a supplementary object 6 which passesthrough the said orifice 500 and with its circular foot attached betweenthe rim of the insert and the head 50 of the metallic envelope.

[0030] On the other hand, in FIG. 7, it is the plastic insert itselfthat passes through the said orifice in the shape of a protrusion toform the supplementary object 6′.

[0031] In FIG. 8, which is similar to FIG. 5, a cap equipped withretention lips 33 has been shown which allows a semi-permanentattachment between the cap 1 and a pourer 9 fitted with circularattachment ribs 90 to engage within the neck 7, which has been shown asdotted lines in the left half of the figure.

[0032] In FIG. 9, which is similar to FIG. 2, a screw cap 1 is shownfitted with an outer sealing cover 8 either crimped or heat shrunk inplace beneath the lower surface of the thread 71 of the neck 7, andcomprising two tear lines 80 which provide a tongue 81 for initialopening of the container.

[0033] In FIG. 10, which is similar to FIG. 5, the orifice 500 of thehead 50 of the metallic envelope is closed with a component made from atransparent material 62 with a supplementary object 6 within the void30.

[0034] In FIG. 11, which is similar to FIG. 5, the void 30 extends overthe full cross sectional area of the cap, and is contained with thespace between the insert head 3 and the head 50 of the metallicenvelope.

[0035] In FIG. 12, which is similar to FIG. 7, the supplementary objectis a detachable item 6″ which is clipped or clicked into the head 3 ofthe insert 2, and which as a result is able to present a much largerdiameter than that of the orifice 500 itself—this item 6″ may also beattached to the remainder of the cap with a screw thread or adhesive.

DETAILED DESCRIPTION OF THE INVENTION

[0036] In accordance with the invention, the said crimped edge 510 ofthe said metallic skirt 51 may cover all or a part of the lower edge 40of the skirt 4 of the said insert 2.

[0037] As illustrated in all the figures relating to the caps 1, thecrimped edge 510 in fact hides the insert 2 which cannot be seen by theconsumer when opening and closing the cap 1. This enables the“technical” and “aesthetic” functions to be separated, the “technical”functions such as those involving sealing, screwing, general mechanicalcharacteristics which are a function of the plastic insert, and the“aesthetic” functions which are a function of the visible surfaces,especially the metallic envelope.

[0038] The cap in accordance with the invention may include a void 30formed in the said insert 2 or bounded by the said insert 2 with thesaid metallic envelope 5 and/or the said sealing arrangement 31, 32.This void 30 is located above the sealing arrangement 31, 32, the axis10 of the neck being vertical and these sealing arrangements lying in ahorizontal plane as shown in the figures.

[0039] In all the figures, except FIG. 11, the said void 30 correspondsto a void within the insert itself.

[0040] In all cases, the said void 30 is bounded by the head 3 of theinsert and the head 50 of the metallic envelope and/or the sealingarrangement, typically the detachable seal 31.

[0041] This void mainly allows the required volume to be attributed tothe upper part of the cap, without modifying the “technical” part of thecap, in particular where the sealing and the screw thread is involved.

[0042] The said arrangement which provides volume or weight may includea supplementary object 6 locked to the said cap 1, typically duringassembly, and/or by exploiting the said void 30, as illustrated in FIGS.2, 5, 6, 7, 8, 9, 10, and 11.

[0043] This supplementary object 6 may be a ballast weight with adensity ideally greater than 4, typically made of iron, and used toincrease the weight of the cap, and held within the said void 30, asshown in the previous figures except FIG. 6. But, any sort of materialcould be used such as a piece of mineral, stone or ceramic.

[0044] In accordance with the invention, the said supplementary object 6may comprise a system of identification and/or detection, an itemcontaining information, or a miniature measuring device held within thesaid void, possibly adding to the weight of the cap.

[0045] As an example amongst many, it is possible to embed a datemarker, a temperature indicator, a hygrometer, with the correspondingtransducer or miniaturised measuring instrument contained within thevoid 30, and in such a case, the void can be blanked with a transparentmaterial 62, as shown in FIG. 10.

[0046] In accordance with a configuration of the invention the saidmetallic envelope may include a head 50 having an upper orifice 500,such that the said insert 2 or its head 3, and/or the said supplementaryobject 6 may emerge through the said orifice 500, as illustrated inFIGS. 6a, 7, 8 and 10.

[0047] As shown in FIG. 7, the said insert 2 or its head 3 may form anextension passing through the said orifice and thus comprising thesupplementary object 6′.

[0048] As illustrated in FIG. 6, the said supplementary object 6comprises a body 60 which passes through the said orifice 500 and a baseflange 61 which is held inside the said void 30 or between the head ofthe insert 3 and the head of the metallic envelope 50.

[0049] This option considerably multiplies the possibilities forpersonalisation of the caps in accordance with the invention, because itis only necessary to alter the supplementary object, by changing itsshape, the material from which it is made (metal, glass, steel, plasticsmaterial, etc. . . . ) without considering the style of the design orsurface texture variations.

[0050] In accordance with a particular configuration shown at FIG. 10,the said orifice 500 may be blanked using a transparent material 62, inorder to see inside the said void 30 or observe its contents which maypossibly include the said supplementary object 6.

[0051] In accordance with the invention, the said metallic envelope 5may be made from aluminium or tin plate, steel, or tin, but typicallyusing 80 to 350 μm thick aluminium.

[0052] The said insert 2 may be a moulded thermoplastics material, suchas polyolefin, polyester or polyamide.

[0053] Preferably, the insert 2 is made from a polyolefin having a yieldstrength under load at 90° C. that is sufficient to avoid the threads ofthe said insert from deforming when the said insert is raised totemperatures as high as 60° C. Among the polyolefins, a copolymer ofpolypropylene is preferable. It may also be advantageous to use highlytransparent plastics material, such as liquid crystal polymers LCP,polycycloolefins COP, for example Zeonor 1600R (R).

[0054] Generally speaking, the said metallic envelope 5 can be decoratedexternally, as well as any item passing through the orifice 500 of thehead 50 of the metallic envelope, and which, consequently becomes avisible and integral item of the cap, and thus a part of its image orgeneral appearance, as is the case in FIGS. 6 and 7.

[0055] In accordance with the invention, the said leakproof sealingarrangement may be created using a detachable seal 31, as shown in FIGS.1, 2, 6, 7 and 9 ; it may involve using a sealing lip 32 affixed to theinternal surface of the head of the said insert, as shown in FIGS. 4, 5,8, 10 and 11.

[0056] As shown in FIG. 8, a pouring item 9 possibly preventing thevessel from being refilled could be permanently fitted to the said cap1, typically with a click-lock device, using a flexible lip 33 formed onthe inner surface of the said head of the insert.

[0057] In accordance with a variant of the invention, shown in FIGS. 3to 3 b, the said void can be partitioned, usually using radial elements300 or circular elements.

[0058] This partitioning may be useful especially in order to improvethe mechanical strength of the detachable seal 31 by providing a rigidbase for the seal, and thus improving its sealing performance.

[0059] The cap in accordance with the invention may comprise an outersealing cover 8 which is used to guarantee the tamperproof integrity ofthe said cap 1 and provide an easy opening method 80, 81, as shown inFIG. 9. This outer sealing cover 8 could be a sealing capsule, typicallyof a heat shrink type, with a primary opening band 81 released using twotear lines 80.

[0060] It is of course also possible to add to a bottle or flask thathas been closed using the cap in accordance with the invention any kindof outer sealing arrangement known, in order to provide the requiredtamperproof integrity.

[0061] As shown in FIGS. 4 and 4a, the lower edge 41 of the skirt 4 ofthe said insert 2 advantageously includes cut-outs 40, typically 6 intotal spaced at 60° to each other, in which a portion 5100 of the edge510 of the said metallic skirt 51 is crimped, in order to ensure boththe metallic skirt 51 and the said skirt 4 of the said insert 2 rotatetogether. Thus without the use of adhesive between the insert 2 and themetallic skirt 5, both these items are locked together in order torotate in unison.

[0062] Another object of the invention is a method for the manufactureof a cap 1 according to the invention wherein:

[0063] a) the said plastic insert 2 with threaded skirt 4, possibly avoid, as well as the said metallic envelope 5 to match the insert andpossibly the detachable seal 31 are supplied,

[0064] b) the said supplementary object 6 or any other item used in thefinal assembly are supplied,

[0065] c) the said plastic insert 2 and the said metallic envelope 5,after ‘inclusion’ of the supplementary object 6 or any other item usedin the final assembly are assembled, and the lower edge 510 of the skirt51 of the metallic envelope 5 is crimped to the lower edge 41 of theskirt 4 of the plastic insert 2, and possibly the detachable seal 31 isinserted.

[0066] Another object of the invention concerns using the cap accordingto the invention as a games feature.

[0067] In fact, on the one hand, the fact that there is a void meansthat within it may be inserted a standard games feature that may producesound, or electromagnetic waves, or contain a smart chip, andfurthermore be used for other means such as identification, and frauddetection, etc. . . .

[0068] On the other hand, the caps according to the invention may, atleast in certain instances, be used once their use as a container,bottle or flask stopper is fulfilled, as a games feature, and typicallyas a “punching bag” when weighted by a large enough mass in the form ofthe supplementary object.

EMBODIMENT EXAMPLES

[0069] Caps in accordance with the attached figures have been made. Forall these caps, the same external dimensions have been kept for themetallic envelope 5. These dimensions are the following (see FIGS. 1 and6a) :

[0070] height A: 15.75 mm

[0071] height B (above the seal): 6.8 mm

[0072] diameter C: 35.3 mm

[0073] radius of curvature D: 50 mm

[0074] radius of curvature E: 5 mm

[0075] internal diameter F of the void (or neck): 20 mm

[0076] internal diameter at crest of the thread G: 30 mm

[0077] internal diameter at root of the thread H: 32.8 mm

[0078] diameter of orifice 500 I: 12 mm

[0079] The chosen materials are :

[0080] for the metallic envelope 5: 100 μm thick strip aluminium chosenfrom the series 3000 alloy range using the Aluminium Associationnomenclature, either varnished, printed or brushed,

[0081] for the plastic insert 2: a copolymer of PP,

[0082] as the supplementary object 6: a piece of iron weighing5/10/15/20 g as in FIGS. 1, 2, 5, 8, 9, 10 and 11 has been used,

[0083] in the case of FIG. 6, the supplementary object 6 is made fromPE,

[0084] in the case of the caps with seals, a commercial standard seal inthe shape of a washer with an effective diameter of H (32.8 mm) has beenused.

[0085] Manufacture of the Caps

[0086] Initially the three types of component used are made separately:

[0087] the insert 2 has been made using injection moulding,

[0088] the metallic envelope 5 has been made by stamping,

[0089] the supplementary objects 6, 6′ have been supplied where they aremade from iron, or moulded in the case of FIGS. 6 and 7.

[0090] They are then assembled. The method of assembly of the differentcomponents may vary depending upon the exact configuration of each cap,but those skilled in the art will identify the appropriate method afterexamining the examples shown in the following figures.

[0091] In general, it is usual practice to insert the said supplementaryobjects 6 between the metallic envelope 5 and the insert 2, prior tocrimping the edge 510 of the metallic skirt to the lower edge 41 of theinsert. However, FIGS. 2 (or 9) illustrates a different case : thesupplementary object 6 can be introduced between the insert 2 and thedetachable seal 31, after crimping of the metallic envelope 5 and theinsert 2.

BENEFITS OF THE INVENTION

[0092] As shown by the embodiment examples and the figures, theinvention opens numerous possibilities in response to the problems inneed of solution.

[0093] It provides ways of personalising caps by making it possible tomanufacture an infinite number of different caps without the need tomodify the technical components from which the cap is made, i.e. thethreads, the insert and its interface with the glassware attachmentrings of the bottles or flasks, and all areas affecting the sealing.

[0094] Moreover, this invention opens wider horizons for the traditionalcaps, providing them with new functions, beyond the usual technicalrequirements, notably in the field of games, identification or frauddetection.

[0095] Finally, the cap according to the invention is particularlyinexpensive, especially when considering that a single crimping of theedge 510, 5100 of the metallic envelope 5 to the plastic insert 2 is allthat is required to lock them together, including in rotation, and tolock in place the supplementary object 6 whenever included. LIST OFREFERENCES SCREW CAP 1 VERTICAL AXIS 10 PLASTIC INSERT 2 INSERT HEAD 3VOID 30 RADIAL PARTITIONS 300 DETACHABLE SEAL 31 SEALING LIPS 32ATTACHMENT LIPS 33 THREADED SKIRT OF INSERT 4 CUT-OUT 40 LOWER EDGE 41METALLIC ENVELOPE 5 HEAD OF ENVELOPE 50 ORIFICE 500 METALLIC SKIRT 51CRIMPING EDGE 510 CRIMPING EDGE in the cut-out 40 5100 SUPPLEMENTARYOBJECT 6 INSERT AND SUPPLEMENTARY OBJECT 6′ CLIPPED OBJECT 6″ BODY 60BASE FLANGE 61 TRANSPARENT BLANK 62 THREADED NECK 7 NECK THREADS 70 NECKTHREAD LOWER SURFACE 71 OUTER SEALING COVER 8 TEAR LINES 80 OPENINGTONGUE 81 POURER 9 FIXING RIBS 90

1. Composite screw cap (1) comprising an assembly a) of a plastic insert(2) comprising a head (3) fitted with a leakproof sealing arrangement(31, 32) and a threaded skirt (4), and b) a metallic envelope (5) inwhich: 1) the said metallic envelope (5) covers all or part of the outersurface of the head of the said insert (2) and comprises at least ametallic skirt (51) which covers the said skirt (4) of the said insert(2), 2) the said metallic skirt (51) comprises an edge (510) that iscrimped to the said insert (2) typically at the lower edge (41) of theskirt (4) of the said insert (2), in order to ensure the said assemblyof the said metallic envelope (5) and the said insert (2), andcharacterised by the said cap (1) comprising a way of adding weightand/or volume to that part of the cap situated above the said sealingarrangement (31, 32).
 2. Cap according to the claim 1 in which the saidcrimping edge (510) of the said metallic skirt (51) covers all or partof the lower edge (40) of the skirt (4) of the said insert (2).
 3. Capaccording to one of the particular claims 1 to 2 comprising a void (30)formed in the said insert (2) or bounded by the said insert (2) with thesaid metallic envelope (5) and/or the said sealing arrangement (31, 32).4. Cap according to one of the particular claims 1 to 3 in which thesaid method of providing weight or volume comprises a supplementaryobject (6) made integral with the said cap (1), typically thanks to theassembly and/or said void (30).
 5. Cap according to the claim 4 in whichthe said supplementary object (6) is a ballast weight with a densitygreater than 4, typically made from iron, designed to increase theweight of the cap, and held within the said void (30).
 6. Cap accordingto the claim 4 in which the said supplementary object (6) comprises amethod of identification and/or detection, or an item carryinginformation or a measuring instrument, held within the said void,possibly increasing the weight of the cap.
 7. Cap according to one ofthe particular claims 1 to 6 in which the said metallic envelopecomprises a head (50) which includes an upper orifice (500) , such thatthe head (3) of the said insert (2), and/or the said supplementaryobject (6) can pass through the said orifice (500).
 8. Cap according tothe claim 7 in which the head (3) of the said insert (2) creates anextension through the said orifice and constitutes the saidsupplementary object (6′).
 9. Cap according to the claim 7 in which thesaid supplementary object (6) comprises a body (60) which passes throughthe said orifice (500) and a foot (61) which is held within the saidvoid (30) or between the head of the insert (3) and the head of themetallic envelope (50).
 10. Cap according to the claim 7 in which thesaid orifice (500) is blanked with a transparent item (62), in order tosee into the void (30) or observe its contents which may possibly be thesaid supplementary object (6).
 11. Cap according to one of theparticular claims 1 to 10 in which the said metallic envelope (5) ismade from aluminium or tin plate, steel or tin, but typically fromaluminium with a thickness of 80 to 350 μm.
 12. Cap according to one ofthe claims 1 to 11 in which the said insert (2) is a thermoplasticsmaterial able to be moulded, typically a polyolefin, polyester, orpolyamide.
 13. Cap according to the claim 12 in which the insert (2) ismade from a polyolefin having a yield strength under load at 90° C. thatis sufficient to prevent the threads of the said insert from deformingwhen the said insert is raised to a temperature as high as 60° C. 14.Cap according to the claim 13 in which the said polyolefin is apolypropylene copolymer.
 15. Cap according to one of the particularclaims 1 to 14 in which the said metallic envelope (5) is decoratedexternally.
 16. Cap according to one of the claims 1 to 15 in which thesaid leakproof sealing arrangement is comprised of a detachable seal(31).
 17. Cap according to one of the claims 1 to 16 in which the saidleakproof sealing arrangement comprises a sealing lip (32) fitted to theinner surface of the head of the said insert.
 18. Cap according to theclaim 17 in which a pouring item (9), possibly preventing the vesselfrom being refilled, is firmly attached to the said cap (1), typicallywith a click-lock device, using a flexible lip (33) formed on the innersurface of the head of the said insert.
 19. Cap according to one of theparticular claims 3 to 18 in which the said void is partitioned,typically using radial or circular elements.
 20. Cap according to one ofthe particular claims 1 to 19 comprising an outer sealing cover (8)which is used to guarantee the tamper proof integrity of the said cap(1) and provide an easy means of opening (80, 81).
 21. Cap according tothe claim 20 in which the outer sealing cover (8) is also a sealingcapsule, typically of a heat shrink type, with a primary opening band(81) released using two tear lines (80).
 22. Cap according to one of theparticular claims 1 to 21 in which the lower edge (41) of the skirt (4)of the said insert (2) comprises cutouts (40) typically 6 in number (40)spaced at 60° to each other, in which an edge part (5100) of the edge(510) of the said metallic skirt (51) is crimped, in order to ensureboth the metallic skirt (51) and the said skirt (4) of the said insert(2) rotate together.
 23. Method of manufacture of a cap (1) according toone of the particular claims 1 to 22 in which: a) the said plasticinsert (2) with threaded skirt (4) possibly comprising a void, as wellas the said metallic envelope (5) to match the insert and possibly thedetachable seal (31) are supplied, b) the said supplementary object (6)or any other item used in the final assembly are supplied, c) the saidplastic insert (2) and the said metallic envelope (5), after “inclusion”of the supplementary object (6) or any other item used in the finalassembly is assembled, and the lower edge (510) of the skirt (51) of themetallic envelope (5) is crimped to the lower edge (40) of the skirt (4)of the plastic insert (2), and possibly the detachable seal (31) isinserted.
 24. Use of the caps according to one of the claims 1 to 22 asa games feature.